I would like to be able to change the output device sometimes, for example to switch between headphones and speakers, without having to use the mouse.
I've figured out how to focus the ‘status menu' area (top-right of screen) with a keyboard shortcut (default is Ctrl+Fn+F8), and can select the sound menu.
But when I try to select items in that menu, pressing the arrow keys will only alter the volume (even with modifiers like Cmd or Alt). Even page up/page down!
How can I access the rest of the menu with the keyboard and change the output device?